# lsm_p_area: AREA (patch level) In landscapemetrics: Landscape Metrics for Categorical Map Patterns

 lsm_p_area R Documentation

## AREA (patch level)

### Description

Patch area (Area and edge metric)

### Usage

lsm_p_area(landscape, directions = 8)


### Arguments

 landscape Raster* Layer, Stack, Brick, SpatRaster (terra), stars, or a list of rasterLayers. directions The number of directions in which patches should be connected: 4 (rook's case) or 8 (queen's case).

### Details

AREA = a_{ij} * (\frac{1} {10000})

where a_{ij} is the area in square meters.

AREA is an 'Area and edge metric' and equals the area of each patch in hectares. The lower limit of AREA is limited by the resolution of the input raster, i.e. AREA can't be smaller than the resolution squared (in hectares). It is one of the most basic, but also most important metrics, to characterise a landscape. The metric is the simplest measure of composition.

Hectares

AREA > 0

#### Behaviour

Increases, without limit, as the patch size increases.

tibble

### References

McGarigal, K., SA Cushman, and E Ene. 2012. FRAGSTATS v4: Spatial Pattern Analysis Program for Categorical and Continuous Maps. Computer software program produced by the authors at the University of Massachusetts, Amherst. Available at the following web site: https://www.umass.edu/landeco/

lsm_c_area_mn, lsm_c_area_sd, lsm_c_area_cv, lsm_c_ca,
lsm_l_area_mn, lsm_l_area_sd, lsm_l_area_cv, lsm_l_ta
lsm_p_area(landscape)